https://www.youtube.com/watch?v=UsQotpjqqt0Video can’t be loaded because JavaScript is disabled: STOP Ruining Your Mixes! The #1 Mastering Trick from one of Abbey Road's BEST! (https://www.youtube.com/watch?v=UsQotpjqqt0) What happens when you take four songs from four different artists, a room full of vintage and…